Bertrand type refractometer

Made:
1870-1893 in France
maker:
Émile Bertrand

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Bertrand type refractometer unsigned, French, 1870-1893.

Details

Category:
Optics
Object Number:
1893-15/1
Materials:
brass (copper, zinc alloy), glass, leather, paper (fibre product), steel (metal), textile and wood (unidentified)
Measurements:
reftactometer: 30 mm x 56 mm x 25 mm, .078kg
type:
refractometer
taxonomy:
  • furnishing and equipment
  • measuring device - instrument